Improvement in harvester-cutters



TTED STATES PATENT OFFICE;

ozno A.' HILLMAN, or PROVIDENCE, nnoDn ISLAND.

IMPRovEMi-:Ni'm HAR-yE'sTER-CUTTERS. y

Specification formingpart of Lctteislatenwt 19, Meld April 28 1874;applicati@ med v February 10, 1'874, Y. l v

To all inkom it mag/ concerm i Be it known that I, Ozno A. HILLMAN, of

the cityof Providence, and county of Providence, in theState of RhodeIsland, have inlvented certain new andnseful Improvements in the CuttingApparatus for dvlowing-lllachines.

My invention consists, partially, in the method of mounting thehearing-blocks on the finger-bar, whereby they may be readily adi ustedor displaced for renewal; also, in com.- bining, with the bearings andsickle-button, a lubricating-chamber provided jwith ducts communicating''with the bearings; and, still further, in certain other minor points,hereinafter described; and I do hereby declare that the followingspecification, taken in connection with thev drawings furnished andforming a.

part 'of 'the same, is a clear, true, and vaccurate description of mysaid invention.

In the drauf'ings','Figure l Arepresents in t'hc top view a'portion 0f afmgerlbar with. sickle .and my improvements attached. Fig, 2 represe-nts, in vertical lateral section, one of the lingers,sickle-sections, the sickle and its bearings, and thelubricating-chamber. Fig. 3 represents the sickle-button,lubricatingchamber,

.f and bearing-clamp in vertical longitudinal seetion. Fig. 4represents, in front View and seetion, the rectangularbearing which isattached to one ,of the .sickle-sections. Fig. 5 represents abearing-blockdetached from its clamp. "Figl 6 illustrates the movementofthe ends of the knife-sections.

In each instance, A denotes the finger-bar, having well-knowncharacteristics,which .in-

volve none Aof the features of my invention. vB-

dcnotes the ordinary sickleLsections. (l de# notesthe sickle, whichmay-be actuated byv any of the Well-triedgoperative mechanisms. Ddenotes ,a bearing-block clamp, which also, with its projecting arm e',performs the fungtio'ns of a Scythe-button. This'clampis s cured to thQupper surface of the tinger-barbyA bolts or heavy screws, as seen at1),'Which may also be employed for uniting the lingers to the nger-bar.-Within the upper portion of the clamp is a lubricating-chamber, E,provided' with a suitable cap or cover and a duct,'as at '0., at thebottom ,thereofl 1 denotes a-rectangular bearing, composed of hardened 5and having'a length slightly greater than the limits within lWhich thesickle is capable ot' being moved longitudinally. 'Ihe bearing isirmly'united to the rear edge of the'sickle5 and forgiving it additionalrnn'icss,sections of the sickle corresponding in number and positionwith the bearingfbloeks are of such a length as to project their rearends over the edge of the sickle-bar about one-fourth of an inch, andtothennder side of these projece..

tions the rectangular hardened-steel bearings are riveted. Thesebearings, when the sickle is in proper workin g position, are infrictional contact with the front and upper faces of the bearingbloeks,thereby relieving from friction and Wear. all portions of thesickle-bar, as Well 'as all of the sickle-sections, except thecutting-edges' thereof. -The' rectangular bearings--I1"beingseparatelyconstructed and secured to the sickle-bar,`-as describedit ispossible to readily renew them'whcibunduly Worn, the bar meantimeremaining intact instead of being worn away, as would be the case if thestationary bearings were in direct contact therewithi which is bound tothe linger-bar by ineans'ot' the clamp D and its bolts." Its thicknessis When, by reason of Wear oir/the front faces of -the blocks, it isdesirable to advance them slightly, it can be readily accomplished byslightly loosening the bolts and driving the blocksinward tothe desired.point When the upper front surface of the blocks become Worn 'theyl canbe 'taken out, turned over, and replaced, thus affording', anopportunity for both sidestol be equally worn before their renewalbecomes desirable. It will be seen that the lubricating-chambers canbesupplied with a lfibrous absorbent and line oil in 'properquancineasta that@ 'winne conducted directly to the exact'v is'required. Figs.

G denotes the bearing-block,.

2 and G'ciearly illustrate the action of the knife-sections. The undersides of the knives are not in general contactwith the entire uppersurface of the lateral slope in the fingers,

-as in machines not possessingmy improvenient, but, on the contrary,eachot' the knives bears only on one or both of the coincldentshear-edges of thetwo adjacent fingers, and

during the longitudinal movementofthe sickle; har the outer ends of theknife-sections move slightly down and up, as illustrated bythe dottedlines at ein Figzl. Thisarrangcment 'of the sickle-bar, bearings, andthe cutters with relation to thelongitudinal upper surfaces of the slotsin the fingers secures at every portion of the stroke a'perfeet shearcontact of each knife-edge with the adjacent shear-edge of. the linger,and results in a* cleanl and 4perfect cnt.,A The hearing'hlock clampwill, preferably, be seeured to the iinger-bar by means of thel)olts,\.rl1ich also perforintlle function ot' securing` two offtheadjacent fingers to the har,rit only being essential that the boltsbemade sufticiently longer than usual, so as to properlytengagetherexvith. 1 The b earingblool; t 'clump being formed` in tone`piece with the 'Scythe-button, and the bearings be ing adjacentthereto, economy in'construction to a desirable degree is atta-ined..The presenceof the Scythe-button adjacent to .the bearings serves, in ameasure, to .prot-ect the surfaces in proper contact. j

" -Ha'ving thus described .my

claim as ne\v,to be secured by Letters Patent- 1.4 The coinbination,with the hearing-blocks "cured to the fnger--bar and' rendered capableyof ready adjustment and renewal, subst-an- 'tially as described.

bearings from dirt, and to keep-the henri-n0# invention, I

G, Vof the clamp' D, whereby ther blocks are set o2.`Thelubricating-chalnher mounted on thev finger-bar, located adjacenttothe sickle-bear- V

